Constant cell balancing, Please Help

Discussion in 'Q500/Q500+/Q500 4K/Typhoon G' started by Simon Folkard, May 15, 2015.

  1. Simon Folkard

    Simon Folkard New Member

    May 13, 2015
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    So further to my previous message about cell balancing it seems the problem isn't resolving itself. Both batteries now are making the charger flash green the red. I have left it on for 3-4 hours and still this continues. Does this mean that some of the cells are getting charge or is it not charging at all? I know of one other person (on the previous thread) that also has this issue. Can anyone help?
     
  2. midego

    midego Administrator
    Staff Member

    Feb 7, 2015
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    Do you have a lipo battery capacity checker? This way you can check if it even charged the battery.

    Otherwise I would suggest you to contact Yuneec. Info is still a bit rare because of they are new with the Q500.

    Please let us know if you know more!
     
  3. johnnygrinder

    johnnygrinder New Member

    May 14, 2015
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    Seems to be a problem with the stock chargers. I bought a skyrc d100 and the cables and first I test the battery's were drain even with the three ou four hours connected to the stock charger. With one hour the d100 have charged and balanced my battery. Stock chargers seems to such real bad.

     
  4. joneil

    joneil New Member

    Apr 18, 2015
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    I have two, Q500s and the stock charger went bad on one of them a couple weeks after I bought the Q500. I could tell it was the charger for sure because the other one and all my batteries worked fine. In my case, the green light was always on, would never charge, never balance.

    Yuneec was going to replace it "free" of charge, but i had to pay shipping down to the US (I am in Canada) and back, and that was as much if not more money than a new charger.

    Went to the local hobby shop to buy a new charger, but for a little more I bought a much better charger. The guys there said the stock chargers were not very good, just like the message above.

    My advice is do the same as me, in vest in a decent charger. You can get them for as little as twice the price of the stock Yuneec charger.

    good luck
     
    johnnygrinder likes this.
  5. Arbutus

    Arbutus Active Member

    Nov 9, 2015
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    Electronics, Mechanical, Structural Engineer
    Mayne Island, BC. Canada
    I use the iMax chargers which come with a nice collection of battery connectors. In the case of the Yuneec LiPo, the required connector is an XT60. Then you need the pigtail balance connector from Yuneec that comes with the stock charger.

    Since these batteries are 10C (? can someone verify ?) they can be charged, balanced and discharged with a quality balance charger much faster than the 2A that the stock unit seems to deliver. I generally charge at 3.5A for a 45-60 minute charge time, compared with 120 minutes with the stock charger.
     
  6. JohanS

    JohanS Member

    Oct 23, 2015
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    The Yuneec batteries has a female EC3 connector, not XT60.

    They can be charged at 1C maximum, which means the maximum current should not exceed 5,4 A. Yes, I know they are "really" 6300 mAh batteries labelled as 5400 mAh, but to be on the safe side, don't charge over 5,4 A. You'll also get longer battery life this way while it's still a lot better than the stock charger.
     
  7. Samir

    Samir New Member

    Sep 4, 2015
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    Check the fuse! I was struggling with the same until decided to pull out the red 7.5A fuse that is on the charger and checked it under the light. Found it fused. Went to the nearest gas station and purchased a pack of 10 pcs. 7.5A fuses. After replacing the fuse, everything started to work normally again! Try it.
     
  8. Arbutus

    Arbutus Active Member

    Nov 9, 2015
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    Electronics, Mechanical, Structural Engineer
    Mayne Island, BC. Canada
    [
     
  9. Arbutus

    Arbutus Active Member

    Nov 9, 2015
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    Electronics, Mechanical, Structural Engineer
    Mayne Island, BC. Canada
    XT60 MALE Connectors fit the Yuneec 5400mAh battery
    5DTests_1771-x.jpg 5DTests_1772-x.jpg
     
  10. JohanS

    JohanS Member

    Oct 23, 2015
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    Yeah, that might be the case, but what I said was the connection on the battery is EC3 and not XT60 as you stated to be the required connector. If you're going to buy a cable to charge for the Yuneec batteries, buy an EC3 cable which is made specifically to fit the battery.

    If you already have a XT60 cable lying arond, by all means use it if you feel comfortable with that.

    EC3 Male:
    ec3male.jpg

    EC3 female (ie the same as on the LiPo)
    ec3female.jpg

    XT60 Male:
    xt60male.jpg
     
  11. Arbutus

    Arbutus Active Member

    Nov 9, 2015
    137
    65
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    Electronics, Mechanical, Structural Engineer
    Mayne Island, BC. Canada
  12. Kmogi

    Kmogi New Member

    Jan 1, 2017
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    I also found my fuse blown. First battery charged fine. When I plug the second battery in to charge there was a "pop". I had a constant alternating between red and green. Did not recognize it at first, but the fuse blew, I replaced fuse and now I unplug the charger and attach battery, then plug back in. Not sure that the right way, but it seems to work.
     
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